What would be the required footing width for a wall footing

What would be the required footing width for a wall footing 24\" thick, total load applied to the wall =15,000 lb/ft, and bearing capacity 3000 psf?

a. 3\' 6\"

b. 4\' 6\"

c. 5\'

d. 5\' 8\"

Solution

Safe bearing capacity, SBC = LOAD / Area

Consider per meter length of footing.

SBC = Load /( 1 × B)

Width, B = 15000/ 3000 = 5\'